Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces
In research on enzyme-based biofuel cells, covalent or noncovalent molecular modifications of carbon-based electrode materials are generally used as a method for immobilizing enzymes and/or mediators. However, the influence of these molecular modifications on the electrochemical properties of electr...
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MDPI AG
2020-03-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/10/4/241 |
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| author | Keishu Miki Takeshi Watanabe Shinji Koh |
| author_facet | Keishu Miki Takeshi Watanabe Shinji Koh |
| author_sort | Keishu Miki |
| collection | DOAJ |
| description | In research on enzyme-based biofuel cells, covalent or noncovalent molecular modifications of carbon-based electrode materials are generally used as a method for immobilizing enzymes and/or mediators. However, the influence of these molecular modifications on the electrochemical properties of electrode materials has not been clarified. In this study, we present the electrochemical properties of chemical vapor deposition (CVD)-grown monolayer graphene electrodes before and after molecular modification. The electrochemical properties of graphene electrodes were evaluated by cyclic voltammetry and electrochemical impedance measurements. A covalently modified graphene electrode showed an approximately 25-fold higher charge transfer resistance than before modification. In comparison, the electrochemical properties of a noncovalently modified graphene electrode were not degraded by the modification. |
| first_indexed | 2024-04-11T13:56:15Z |
| format | Article |
| id | doaj.art-b709b4c053d247998d69b698ced05a06 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T13:56:15Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-b709b4c053d247998d69b698ced05a062022-12-22T04:20:18ZengMDPI AGCrystals2073-43522020-03-0110424110.3390/cryst10040241cryst10040241Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule InterfacesKeishu Miki0Takeshi Watanabe1Shinji Koh2College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa 252-5258, JapanCollege of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa 252-5258, JapanCollege of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa 252-5258, JapanIn research on enzyme-based biofuel cells, covalent or noncovalent molecular modifications of carbon-based electrode materials are generally used as a method for immobilizing enzymes and/or mediators. However, the influence of these molecular modifications on the electrochemical properties of electrode materials has not been clarified. In this study, we present the electrochemical properties of chemical vapor deposition (CVD)-grown monolayer graphene electrodes before and after molecular modification. The electrochemical properties of graphene electrodes were evaluated by cyclic voltammetry and electrochemical impedance measurements. A covalently modified graphene electrode showed an approximately 25-fold higher charge transfer resistance than before modification. In comparison, the electrochemical properties of a noncovalently modified graphene electrode were not degraded by the modification.https://www.mdpi.com/2073-4352/10/4/241graphenesurface modificationenzymatic biofuel cellelectrochemistry |
| spellingShingle | Keishu Miki Takeshi Watanabe Shinji Koh Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces Crystals graphene surface modification enzymatic biofuel cell electrochemistry |
| title | Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces |
| title_full | Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces |
| title_fullStr | Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces |
| title_full_unstemmed | Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces |
| title_short | Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces |
| title_sort | electrochemical characterization of cvd grown graphene for designing electrode biomolecule interfaces |
| topic | graphene surface modification enzymatic biofuel cell electrochemistry |
| url | https://www.mdpi.com/2073-4352/10/4/241 |
| work_keys_str_mv | AT keishumiki electrochemicalcharacterizationofcvdgrowngraphenefordesigningelectrodebiomoleculeinterfaces AT takeshiwatanabe electrochemicalcharacterizationofcvdgrowngraphenefordesigningelectrodebiomoleculeinterfaces AT shinjikoh electrochemicalcharacterizationofcvdgrowngraphenefordesigningelectrodebiomoleculeinterfaces |